Lead-Acid Battery Sizing Calculator

Size flooded or AGM lead-acid battery banks with Peukert correction, temperature compensation, and aging factor.

Input Parameters

Results

--
Peukert-Corrected Ah
Ah
--
Temp-Corrected Ah
Ah
--
Total Required Ah
Ah
--
Recommended DoD
%
Note: Lead-acid should not be discharged below 50% DoD for maximum cycle life. Peukert effect is significant at high discharge rates.

Reference

Peukert Factor = (C20_rate / Discharge_hrs)^(k-1) Corrected Ah = Load Ah x Peukert Factor Temp Correction = 1 + 0.005 x (77 - Temp_F) Total Ah = Temp-Corrected / Aging Factor k: Flooded=1.2, AGM=1.1, Gel=1.15